Multiple choice

The ______in the Earth's atmosphere protects living organisms from the harmful ultraviolet radiations of the Sun.

  1. stratosphere

  2. mesosphere

  3. ozone layer

  4. thermosphere

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The ozone layer in the stratosphere absorbs most of the Sun's harmful ultraviolet radiation, protecting living organisms from DNA damage and other harmful effects. Without this layer, life on Earth would be exposed to dangerous levels of UV radiation.